Request for a preliminary ruling from the Upper Tribunal (Immigration and Asylum Chamber) London

Reference for a preliminary ruling — Citizenship of the European Union — Article 21 TFEU — Right of Union citizens to move and reside freely within the territory of the European Union — Directive 2004/38/EC — Point (b) of the first subparagraph of Article 3(2) — Partner with whom the Union citizen has a duly-attested durable relationship — Return to the Member State of which the Union citizen is a national — Application for residence authorisation — Extensive examination of the applicant’s personal circumstances — Articles 15 and 31 — Effective judicial protection — Charter of Fundamental Rights of the European Union — Article 47